scholarly journals A phase-error prediction method for coherent beam combining via convolutional neural network

Optik ◽  
2021 ◽  
pp. 167827
Author(s):  
Haolong Jia ◽  
Jing Zuo ◽  
Qiliang Bao ◽  
Chao Geng ◽  
Xinyang Li ◽  
...  
Keyword(s):  
Neural Network ◽  
Convolutional Neural Network ◽  
Phase Error ◽  
Prediction Method ◽  
Coherent Beam ◽  
Error Prediction ◽  
Coherent Beam Combining ◽  
Beam Combining

scholarly journals Deep-learning-based phase control method for tiled aperture coherent beam combining systems

2019 ◽  
Vol 7 ◽  
Author(s):  
Tianyue Hou ◽  
Yi An ◽  
Qi Chang ◽  
Pengfei Ma ◽  
Jun Li ◽  
...  
Keyword(s):  
Deep Learning ◽  
Control Method ◽  
Phase Error ◽  
Phase Control ◽  
Coherent Beam ◽  
Coherent Beam Combining ◽  
Beam Combining ◽  
Collision Problem ◽  
Data Collision ◽  
Combining Systems

We incorporate deep learning (DL) into tiled aperture coherent beam combining (CBC) systems for the first time, to the best of our knowledge. By using a well-trained convolutional neural network DL model, which has been constructed at a non-focal-plane to avoid the data collision problem, the relative phase of each beamlet could be accurately estimated, and then the phase error in the CBC system could be compensated directly by a servo phase control system. The feasibility and extensibility of the phase control method have been demonstrated by simulating the coherent combining of different hexagonal arrays. This DL-based phase control method offers a new way of eliminating dynamic phase noise in tiled aperture CBC systems, and it could provide a valuable reference on alleviating the long-standing problem that the phase control bandwidth decreases as the number of array elements increases.

Passive Coherent Beam Combining of Fiber Lasers: Accurate Measurements of Phase Error Tolerance

CLEO: 2013 ◽  
2013 ◽  
Author(s):  
Hung-Sheng Chiang ◽  
James R. Leger ◽  
Johan Nilsson ◽  
Jayanta Sahu
Keyword(s):  
Fiber Lasers ◽  
Phase Error ◽  
Coherent Beam ◽  
Error Tolerance ◽  
Coherent Beam Combining ◽  
Beam Combining

7.1 kW coherent beam combining system based on a seven-channel fiber amplifier array

2021 ◽  
Vol 140 ◽  
pp. 107016 ◽  
Author(s):  
Pengfei Ma ◽  
Hongxiang Chang ◽  
Yanxing Ma ◽  
Rongtao Su ◽  
Yunfeng Qi ◽  
...  
Keyword(s):  
Fiber Amplifier ◽  
Coherent Beam ◽  
Coherent Beam Combining ◽  
Beam Combining

High-precision active synchronization control of high-power, tiled-aperture coherent beam combining

2017 ◽  
Vol 42 (19) ◽  
pp. 3960 ◽  
Author(s):  
Chun Peng ◽  
Xiaoyan Liang ◽  
Renqi Liu ◽  
Wenqi Li ◽  
Ruxin Li
Keyword(s):  
High Precision ◽  
High Power ◽  
Coherent Beam ◽  
Synchronization Control ◽  
Coherent Beam Combining ◽  
Beam Combining

Mutual injection locking and coherent beam combining of two thulium doped fiber lasers

Laser Physics ◽  
2010 ◽  
Vol 21 (1) ◽  
pp. 172-175 ◽  
Author(s):  
P. Zhou ◽  
X. L. Wang ◽  
Y. X. Ma ◽  
K. Han ◽  
Z. J. Liu
Keyword(s):  
Fiber Lasers ◽  
Coherent Beam ◽  
Injection Locking ◽  
Coherent Beam Combining ◽  
Beam Combining ◽  
Mutual Injection Locking

All-fiber phase actuator based on an erbium-doped fiber amplifier for coherent beam combining at 1064 nm

2011 ◽  
Vol 36 (4) ◽  
pp. 448 ◽  
Author(s):  
Henrik Tünnermann ◽  
Jörg Neumann ◽  
Dietmar Kracht ◽  
Peter Weßels
Keyword(s):  
Fiber Amplifier ◽  
Coherent Beam ◽  
Erbium Doped Fiber Amplifier ◽  
Coherent Beam Combining ◽  
Beam Combining ◽  
Erbium Doped
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